INSTALLATION AND CONFIGURATION MANUAL
DIO48
14
Tracking
The DIO48 can be used as a tracking audio delay. The tracking
input must be connected to a tracking output of a Frame
synchronizer, for example the SFS11. The setting
Tracking
has
3 modes, they are as follows;
Off
: No tracking.
Fast
: Fast tracking and handling of frame
drops enabling instantaneous synchronization of audio.
Smooth
: Slow correction of frame drops enabling gradual
synchronization of audio.
The default setting of
Tracking
is
Off
.
Channel_mode
With this channel you select what the channel mode of the audio
is. This is set in the AES/EBU’s Channel Status Bits in byte 1. Can
be set to
2-ch
(2 mono channels),
stereo
or
Dig – Dig
(2
digital channels). Default is
2-ch
.
AES / EBU 's Channel Status Bits:
The AES / EBU standard is composed of channel bits, each
surrounded by a subframe. In each subframe there are 192 bits of a
word processed in a single audio block, translated into a fraction of
192 / 8 = 24 bytes. In the first, the basic information of how most
parts of the bits are used is explained. If you are wondering how
the 24 bytes are described in the AES / EBU standards, below are
the most common descriptions that experts use to explain the
process:
Byte 0 is often described as the most fundamental of the control
data. These are available: primarily the sample rate, compression,
and emphasis.
Byte 1 specifies the type of the audio stream, whether stereo,
mono, or a combination of both.
Byte 2 for audio word length
Byte 3 is used to treat multi-channel applications
Byte 4 is used to evaluate the suitability of the audio signal
sampling rate as a reference to describe
Byte 5 is reserved.
Bytes 6-9 and 10-13 represent the two slots of four bytes in the
transmission of ASCII characters.
Bytes 14 to 17 are used for the sample address 4-byte/32-bit
Bytes 18 to 21 represent the time format.
Byte 22 is involved in the reliability of the audio block
Byte 23 is required for absences, resulting in an interruption of
data flow
